B1. Aydın Y, Çavuşoğlu H, Kaya RA, Turkmenoğlu ON, Can SM, Şahin Y:Clinical and radiological longterm outcome after anterior contralateral cervical microdiscectomy: 10 years prospective study (Oral Presentation). Eur Spine J 2006:15(Suppl.4):S459-S489

B2. Aydın Y, Kaya RA, Müslüman M, Çavuşoğlu H, Türkmenoğlu O : Selection criteria and outcome of operative approaches for skull base meningiomas (Oral Presentation). IVth International Congress on Cerebral Venous System and Meningiomas. June 03-08, 2002 The Marmara Hotel, İstanbul, Turkey.

B3.Aydın Y, SM Can, IM Ziyal, Türkmenoğlu O, Kaya RA, Şahin Y : Anterior Contralateral Microsurgical Approach Without Interbody Fusion For Cervical Disc Disease (Oral Presentation). World Spine I August 27-September 1, 2000, Berlin

B4.Aydın Y, Ziyal Mİ, Türkmen CS, Kaya RA, Duman H : Modified Lumbar Microdiscectomy (Oral Presentation). AANS Annual Meeting-New Orleans, Louisiana, April 26, 1999, New Orleans, USA.

B5.Türkmen CS, Ziyal Mİ, Kaya RA, Aydın Y : A new spinal stabilization system: Anterior intercorporal fixation with the türkmen device. Cadaver Study (Oral Presentation). 11th International congress of neurological surgery, July 6-11, 1997 Amsterdam

B6.Türkmen C, Ziyal İ, Kaya RA, Yılmaz H, Gençosmanoğlu B : A new stabilization system: Intercorporal fixation device for thoracolumbar stabilization (Oral Presentation). 37th Annual Scientific Meeting of the International Medical Society of Paraplegia, June 18-20, 1998 Brazil

B7.Bayhan M, Türe U, Kaya RA, Hiçdönmez T, Ziyal Mİ, Çoban TE, Rizeli Y : Intracranial Aneurysms (Oral Presentation). XXIII. Semaine Medicale Balkanique 24-27.08.1994, İstanbul